Sorry but I have to ask what is wrong with the normal type bullets?
Surely bullets such as the Hornady 162 Interlock, SST or even the Interbond.
Nachetez has the Speer 145 grn Grand Slam on offer.
Sierra of course make their 160 Grn Game King
Midway I see is having a sale on the 7mm (0.284) Speer 175 Grn mag Tip:-
Speer Hot-Cor Bullets 7mm (284 Diameter) 175gr Mag-Tip Box of 100, Product #621527
Sale Price: $19.79, Reg. $33.99 — Save $14.20
All these have been used successfully in the past to harvest Elk and the 280 remington after all is not a super duper magnum.
I wonder how hunters managed to harvest their Elk with out the "Wonder" bullets that we are now told are required or the beast will just shrug it off and wander off to continue feeding etc until another hunter comes along who IS using one of the new "Wonder" bullets
.
I never got to work much with my 280 I am sad to say.... perhaps one day i can back to working with it.